Blacken your passport
You must submit your ID or passport digitally, then black out your data; we have described how to do this here: Correctly blacken your passport and ID card
Use your passport to identify yourself
You can discuss at length whether there is an obligation to identify yourself (to an authority). However, the right way is not to get into trouble here and to identify yourself as often as possible with your passport, because - unlike your identity card - your passport does not contain any information about your place of residence.
Don't have any parcels sent to your home!
Use a parcel store or the Paktstation instead.
Your name doesn't have to be on the doorbell sign
A common opinion is that in Germany you are obliged to have your own name on the doorbell. There is no such obligation and in many countries this has (rightly) become unusual.
Your name doesn't have to be on the door
A common belief in Germany is that you are obliged to have your own name on your front door. There is no such obligation and in many countries this has (rightly) become unusual.
Your name doesn't have to be on the letterbox
A widespread myth is that there is supposedly a legal obligation in Germany to maintain a letterbox with your own name on it. There is no such obligation and in many countries this has (rightly) become unusual. Instead, you can (and should) state your apartment number.
If there are people from whom you want to receive mail, simply give them the apartment number as an "address supplement".
Use a camouflage address
The camouflage address is in a completely different league. It offers a lot of protection, but is also very expensive and time-consuming (unless you happen to be able to use your own parents' address). If you really want to play it safe, rent a small apartment and write your own name on the letterbox and address.
Alternatively, you can use a so-called representative service (e.g. mailboxes etc.) and enter this address.
Use a cover name
Living conspicuously inconspicuously is by no means inconspicuous. So that your doorbell sign is not the only one without a name on it, you can write your imaginary roommate on the doorbell sign.
What about the courts/police/community?
The courts, police and local authorities know your address and you are obliged to inform the residents' registration office (this is the local authority where you live) immediately after moving. You can also enter an additional address there and you should do this so that you can receive official mail. You can use either the apartment number or the cover name as an additional address.
However, you should consider whether you should submit an application to set up an information block. The hurdles for this are not small, but they are usually feasible.
What does an information block mean in practice?
The municipalities sell your address data. Unfortunately, this is completely legal in Germany. Address data for which an information block has been set up is not sold (or otherwise passed on without further ado).
A credit freeze does not mean that no one will receive your data. For the purpose of asserting legitimate interests, they will be released upon request. This is the case, for example, if someone wants to sue you.
But even then, this can often be avoided in practice by reacting quickly and involving a lawyer. Fortunately, you will be heard before the disclosure is made.
Do parties receive my address data
This varies in practice. As a rule, all parties (including extremist parties) receive your address data from the municipality (even free of charge, by the way).
In practice, however, we have observed that this data is not released if an information block is set up with the addition "danger to life and limb".
Will I be informed if my address data is disclosed?
Only if an information block has been set up for you.
What about the landlord?
That is indeed difficult. It's probably a good idea to at least let them know what's on your letterbox. Then he will also know that you none WG when he sees your cover name.
Can I stay in my single-family home?
If there is a danger to life and limb, you really shouldn't take any risks.
If you don't happen to be the Federal Chancellor or Prime Minister and the BKA/LKA install windows with a special bullet resistance class and then plant conifers to block lines of sight or fire all year round, then you need to be aware of one thing: Your anonymity is always better guaranteed in an apartment building than in a detached house. A lot of floors, even more doors and nowhere your name. That scares off malicious actors.
What about cell phones and the Internet?
This is complicated in Germany, but can often be solved anonymously by registering the cell phone and Internet to a legal entity (don't forget the extract from the register!).
The disadvantage is that you then unfortunately do not benefit from the many consumer protection laws.